CN220818008U

CN220818008U - Air purification device and air treatment equipment

Info

Publication number: CN220818008U
Application number: CN202322677972.1U
Authority: CN
Inventors: 代光剑; 曾敏; 崔谷梨; 杨翠霞; 陈新厂
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-04-19
Anticipated expiration: 2033-09-28

Abstract

An air cleaning device and an air treatment apparatus, the air cleaning device comprising: a housing; a first electrode connected to the housing for loading a negative voltage; the second electrode is connected with the shell, is arranged at intervals with the first electrode and is used for grounding or connecting to zero potential; a third electrode connected to the housing and disposed outside the region between the first electrode and the second electrode for loading a negative voltage; the first electrode and the second electrode are used for generating plasma together, the third electrode is used for generating negative ions, and the distance between the third electrode and the second electrode is greater than or equal to 10mm. The application aims to solve the technical problem that an anion generator and a plasma generator are combined on the same module to discharge anions to an electrode.

Description

Air purification device and air treatment equipment

Technical Field

The present disclosure relates to the field of air purification technologies, and in particular, to an air purification device and an air treatment apparatus.

Background

An air cleaning apparatus including a negative ion generator and a plasma generator is proposed in the related art. The negative ion generator generates negative ions through ionizing air, and the negative ions can settle dust and kill bacteria and viruses. The plasma generator generates plasma by ionizing air to kill bacteria and viruses.

However, the combination of the negative ion generator and the plasma generator to the same module causes the negative ion electric field generated by the negative ion generator and the plasma electric field generated by the plasma generator to interfere with each other.

After the negative ion electric field is disturbed, an electric hand phenomenon exists at a negative ion discharge electrode of the negative ion generator.

The negative ion electric field is superimposed on the plasma electric field to cause the plasma electric field to be distorted, and compared with the uniform electric field, the distorted plasma electric field is easier to lead a water film in a high-humidity environment to spread or form a special shape on a structural member of the air purification device, so that the phenomenon of arcing and sparking in the high-humidity environment is easy to occur.

Disclosure of utility model

The application aims to solve the technical problem that an anion generator and a plasma generator are combined on the same module to discharge anions to an electrode.

To solve the technical problem, the present application provides an air cleaning device, comprising:

a housing;

A first electrode connected to the housing for loading a negative voltage;

The second electrode is connected with the shell, is arranged at intervals with the first electrode and is used for grounding or connecting to zero potential;

a third electrode connected to the housing and disposed outside the region between the first electrode and the second electrode for loading a negative voltage;

The first electrode and the second electrode are used for generating plasma together, the third electrode is used for generating negative ions, and the distance between the third electrode and the second electrode is greater than or equal to 10mm.

In one exemplary embodiment, the housing includes a base including:

the base body is arranged at intervals with the second electrode, and the first electrode is connected to one side of the base body, which is close to the second electrode; and

A pillar extending from the base body and connected to the second electrode;

Wherein, be provided with on the base body be located the pillar with first through-hole between the first electrode.

In an exemplary embodiment, the width of the first through hole in the direction from the pillar to the first electrode is greater than or equal to 1mm.

In an exemplary embodiment, the struts are provided in two, and the first electrode is provided in a region between the two struts;

The first through holes are arranged between each pillar and the first electrode.

In an exemplary embodiment, a surface of the second electrode facing the first electrode is exposed; or an insulating layer is arranged on the second electrode, and the insulating layer coats the surface of the second electrode facing the first electrode.

In an exemplary embodiment, the housing further includes a shield provided with a vent hole, covering the base body;

The first electrode stretches into the protective cover from the base body, and the second electrode is located in the protective cover.

In an exemplary embodiment, the second electrode is spaced apart from the shield.

In an exemplary embodiment, the third electrode is disposed outside the shield.

In an exemplary embodiment, the second electrode is provided with a first injection hole, and the shield is provided with a second injection hole coaxial with the first injection hole;

the first electrode comprises a conductive base connected to the base body and a conductive tip part extending from the conductive base to the second electrode;

The conductive tip portion is provided with a tip toward the first injection hole and on a central axis of the first injection hole.

In an exemplary embodiment, the second electrode is configured as a flat plate in the shape of a straight bar, and one surface of the second electrode faces the first electrode.

In an exemplary embodiment, the conductive tip portion, the first injection hole, and the second injection hole are each provided with a plurality of;

The first spray holes are coaxial with the second spray holes respectively, and the tips of the conductive tip parts are located on the central axes of the first spray holes respectively.

In an exemplary embodiment, the second electrode is provided with a first injection hole extending in a first direction;

The first electrode includes a conductive base connected to the base body and a plurality of conductive tip portions extending from the conductive base toward the second electrode and arranged in the first direction, the conductive tip portions being provided with tips toward the first injection hole; at least two of the tips face the same first injection hole;

The shield is provided with a second injection hole leading to the first injection hole.

The application also proposes an air treatment device comprising an air cleaning apparatus as described above.

The air purification device not only can diffuse negative ions into the air to play a role in large-scale sterilization and dust removal, but also can kill bacteria and viruses in the air passing through the air purification device through the plasma, and has an odor removal effect, so that the air can be purified, and the indoor air quality is improved.

Because the voltage difference exists between the second electrode and the third electrode, an electric field can be generated between the second electrode and the third electrode, and because the distance between the second electrode and the third electrode is more than or equal to 10mm, the electric field can be greatly weakened, and when a person touches the third electrode, the micro-current passing through the human body can be smaller than the lowest value of the current which enables the human body to have a touch inductance, so that the human body cannot feel electric shock, and the user experience is improved.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. Other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The accompanying drawings are included to provide an understanding of the principles of the application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain, without limitation, the principles of the application.

Fig. 1 is a schematic perspective view of an air purifying apparatus according to an embodiment of the present application;

FIG. 2 is a schematic perspective view of an air cleaning apparatus according to an embodiment of the present application after a protective cover is removed;

FIG. 3 is a schematic top view of the air cleaning apparatus after removal of the protective cover in an embodiment of the application;

fig. 4 is a schematic front view of a first electrode according to an embodiment of the application.

Description of the reference numerals

100. An air purifying device; 1. a housing; 11. a base; 111. a base body; 1111. a first through hole; 112. a support post; 113. a mounting base; 12. a protective cover; 121. a vent hole; 122. a second injection hole; 2. a first electrode; 21. a conductive tip portion; 22. a conductive base; 3. a second electrode; 31. a first injection hole; 4. and a third electrode.

Detailed Description

As shown in fig. 1, fig. 1 shows the structure of an air cleaning device 100 in the present embodiment. The air cleaning device 100 includes a housing 1, a first electrode 2, a second electrode 3, and a third electrode 4. The housing 1 is made of an insulating material, and the housing 1 may be made of plastic. The first electrode 2, the second electrode 3 and the third electrode 4 are all fixed to the housing 1.

As shown in fig. 2, the first electrode 2 and the second electrode 3 are both conductors. The first electrode 2 and/or the second electrode 3 may be made of a metal including one or more of stainless steel, copper, aluminum, tungsten, molybdenum. The first electrode 2 and/or the second electrode 3 may also be made of a conductive nonmetallic material such as graphite, carbon fiber, or the like. The first electrode 2 and the second electrode 3 may include a strip-shaped, ring-shaped, sheet-shaped conductive body, and the shape of the first electrode 2 and the second electrode 3 is not limited. The first electrode 2 and the second electrode 3 are arranged at intervals. The first electrode 2 is used for loading negative voltage, and the second electrode 3 is used for grounding or connecting to zero potential, so that a voltage difference exists between the first electrode 2 and the second electrode 3. The negative voltage applied to the first electrode 2 may be-2 kV to-10 kV. When the voltage difference between the first electrode 2 and the second electrode 3 is sufficiently large, air between the first electrode 2 and the second electrode 3 is ionized to generate plasma, and a large amount of high-energy particles such as electrons, hydroxyl radicals, reactive Oxygen Species (ROS), reactive Nitrogen Species (RNS) and the like are generated.

The third electrode 4 is a conductor. The third electrode 4 may be made of a metal including one or more of stainless steel, copper, aluminum, tungsten, molybdenum. The third electrode 4 may also be configured as a carbon fiber bundle. The negative voltage applied to the third electrode 4 may be-2 kV to-10 kV. The third electrode 4 is arranged outside the area between the first electrode 2 and the second electrode 3. The third electrode 4 may be disposed at one side of the first electrode 2 and spaced apart from the first electrode 2. The third electrode 4 is also spaced from the second electrode 3, and the distance between the second electrode 3 and the third electrode 4 is greater than or equal to 10mm. The distance between the third electrode 4 and the second electrode 3 is larger than the distance between the first electrode 2 and the second electrode 3. The third electrode 4 is loaded with a negative voltage, and the third electrode 4 is configured to ionize air to generate negative ions.

The negative ions generated by the third electrode 4 are combined with positively charged particles such as bacteria, viruses and dust in the air to cause the particles to be coagulated and settled, thereby achieving the purpose of reducing fine particles such as bacteria, viruses and dust in the air, and having long negative ion diffusion distance and large action range; the first electrode 2 and the second electrode 3 generate plasmas to generate high-energy particles, so that the high-energy particles can not only have a good effect of killing bacteria and viruses passing through a plasma region, but also have a good effect of decomposing and purifying peculiar smell in air, but have high activity, short service life and limited application range. Therefore, the effect of the negative ions generated by the first electrode 2 and the second electrode 3 is complementary with the effect of the negative ions generated by the third electrode 4, so that the air purifying device 100 not only can diffuse the negative ions into the air to perform a large-scale sterilization effect, but also can kill bacteria and viruses in the air passing through the air purifying device 100 through the plasma, and has an odor removing effect, thereby purifying the air and improving the indoor air quality.

The second electrode 3 and the third electrode 4 have a voltage difference, an electric field is generated between the second electrode 3 and the third electrode 4, and because the distance between the second electrode 3 and the third electrode 4 is greater than or equal to 10mm, the electric field can be greatly weakened, and when a person touches the third electrode 4, the micro-current passing through the human body can be smaller than the lowest value of the current which enables the human body to have a touch inductance, so that the human body cannot feel electric shock, and the user experience is improved.

In an exemplary embodiment, as shown in fig. 2, the housing 1 includes a base 11. The base 11 may be a mounting base of the air cleaning device 100. The first electrode 2, the second electrode 3 and the third electrode 4 are all connected to the base 11.

The base 11 includes a base body 111 and a pillar 112. The base body 111 may be configured as a strip-shaped case. The base body 111 is spaced apart from the second electrode 3. One surface of the base body 111 faces the second electrode 3. The second electrode 3 may be configured in a bar shape, and an extension direction of the base body 111 may be the same as that of the second electrode 3. The first electrode 2 is connected to a side of the base body 111 near the second electrode 3. The first electrode 2 may be configured in a bar shape, and an extending direction of the first electrode 2 is the same as that of the base body 111. The base body 111 is provided with a first through hole 1111 at a side close to the second electrode 3.

The support column 112 is constructed in a columnar structure. The support posts 112 are made of an insulating material. The support column 112 is located at a side of the base body 111 close to the second electrode 3. The support column 112 extends from a side of the base body 111 near the second electrode 3 toward the second electrode 3. One end of the support column 112 is connected to the base body 111, and the other end of the support column 112 is connected to the second electrode 3. The support column 112 supports the second electrode 3.

The first through hole 1111 of the base body 111 is provided between the support column 112 and the first electrode 2. The first through hole 1111 may be provided as a bar-shaped hole, and an extending direction of a cross section of the first through hole 1111 is perpendicular to a direction from the pillar 112 to the first electrode 2. The length of the cross section of the first through hole 1111 in the extending direction thereof is preferably greater than or equal to the diameter of the pillar 112.

Because the first through hole 1111 is arranged between the support column 112 and the first electrode 2, the water film formed on the surfaces of the support column 112 and the base body 111 is disconnected at the first through hole 1111 under the high humidity environment, the creepage distance between the first electrode 2 and the second electrode 3 under the high humidity environment can be effectively increased, and the water film covered on the support column 112 and the base body 111 under the high humidity environment is prevented from becoming an extension of the first electrode 2 and the second electrode 3, so that the arc striking and firing caused by the reduction of the discharge distance between the first electrode 2 and the second electrode 3 are caused.

In one exemplary embodiment, the width of the first through hole 1111 of the base body 111 in the direction from the pillar 112 to the first electrode 2 is greater than or equal to 1mm.

The width of the first through hole 1111 is set to be greater than or equal to 1mm, so that the creepage distance between the first electrode 2 and the second electrode 3 is sufficiently large in a high humidity environment, thereby further avoiding the phenomenon of arcing between the first electrode 2 and the second electrode 3.

In one illustrative embodiment, two struts 112 are provided, with the two struts 112 being spaced apart. Two struts 112 are connected to opposite ends of the second electrode 3, respectively. The two supports 112 support the second electrode 3 in common. The first electrode 2 is arranged in the region between the two struts 112. Opposite ends of the first electrode 2 face the two pillars 112, respectively. Both posts 112 are spaced apart from the first electrode 2. The base body 111 is provided with a first through hole 1111 in a region between the first electrode 2 and each of the struts 112.

The second electrode 3 is connected to the base body 111 through two support posts 112, and the second electrode 3 is mounted more firmly. Meanwhile, a first through hole 1111 is arranged between each pillar 112 and the first electrode 2, so that the creepage distance between the first electrode 2 and the second electrode 3 can be increased, and the arcing and sparking phenomenon can be prevented.

In an exemplary embodiment, the surface of the second electrode 3 is covered with an insulating layer (not shown in the figures). The second electrode 3 is covered by an insulating layer. The insulating layer can be an insulating paint coating, a plastic film layer, a silica gel film layer or a ceramic film layer.

Because the insulating layer completely covers the second electrode 3, the insulating layer can completely isolate the second electrode 3 from the water film, and the phenomenon of arc striking and ignition between the first electrode 2 and the second electrode 3 can be thoroughly avoided. In an exemplary embodiment, the surface of the second electrode 3 facing the first electrode 2 is exposed; or an insulating layer is arranged on the second electrode 3, and the insulating layer coats the surface of the second electrode 3 facing the first electrode 2.

In this way, the insulating layer may also partially cover the second electrode 3, reducing the probability of arcing between the first electrode 2 and the second electrode 3.

In an exemplary embodiment, as shown in fig. 1, the housing 1 further comprises a protective cover 12. The shield 12 has vent holes 121 for air and active substances such as ions, electrons, radicals, etc. to enter or leave the shield 12. The shield 12 may be configured as a hollow structure, which may be a grille, a screen, or other hollow structure, and the through holes formed by the hollow structure form the ventilation holes 121. The air in the shield 12 and the air outside the shield 12 can be convected through the vent holes 121. The shield 12 covers the base body 111. The first electrode 2 extends from the base body 111 into the shield 12. The second electrode 3 and the support column 112 are both located within the shield 12. The protective cover 12 can prevent a human body from touching the first electrode 2 and the second electrode 3, avoid the human body from being cut by the first electrode 2 or the second electrode 3, and avoid the first electrode 2 or the second electrode 3 at the contact position from electric shock.

In an exemplary embodiment, the second electrode 3 is spaced from the shield 12, and the second electrode 3 is not in contact with the shield 12.

In this way, when the environmental humidity is high, a water film is attached to the surface of the protective cover 12, the second electrode 3 does not contact the water film, and the phenomenon that the water film is pulled into the discharge distance between the first electrode 2 and the second electrode 3 to cause arc striking and ignition between the first electrode 2 and the second electrode 3 is prevented.

In an exemplary embodiment, as shown in fig. 1 and 2, the base 11 further includes a mounting seat 113. The mounting seat 113 is connected to the base body 111 and is located outside the protection cover 12. The mounting seat 113 may be connected to a side of the base body 111 near the second electrode 3. The third electrode 4 is provided on the mount 113. The mounting seat 113 may be provided with a mounting hole, and the third electrode 4 is inserted into the mounting hole of the mounting seat 113. The third electrode 4 is located outside the shield 12.

The third electrode 4 is arranged outside the protective cover 12, so that negative ions generated by ionizing air of the third electrode 4 after being diffused on the protective cover 12 can be prevented from accumulating on the protective cover 12 to form a counter electric field, and the rate of generating negative ions by the third electrode 4 is reduced.

In an exemplary embodiment, as shown in fig. 3 and 4, the first electrode 2 includes a conductive base 22 and a conductive tip 21. The conductive base 22 may be provided in a straight bar shape. The extending direction of the conductive base 22 is the same as the extending direction of the second electrode 3. The conductive base 22 is disposed in the base body 111 and connected to the base body 111. The conductive base 22 may be a conductive sheet.

The conductive tip portion 21 is provided on a side of the conductive base 22 close to the second electrode 3. The conductive tip portion 21 extends from the conductive base 22 toward the second electrode 3. The conductive tip portion 21 extends into the shield 12 and is spaced from the second electrode 3. The end of the conductive tip portion 21 facing the second electrode 3 is a sharp tip. The conductive tip portion 21 may be constructed in a saw-tooth, needle-like or wire-like structure having a small radius of curvature. The first through hole 1111 of the base body 111 is provided between the conductive tip portion 21 and the post 112.

The second electrode 3 is provided with a first injection hole 31. The first injection hole 31 is a through hole. One end of the first injection hole 31 faces the conductive tip portion 21 of the first electrode 2, and the other end of the first injection hole 31 faces the top of the shield 12. The tip of the conductive tip portion 21 is located on the central axis of the first injection hole 31. The shield 12 is provided with a second spray orifice 122. The second injection hole 122 is a through hole. The diameter of the second injection hole 122 may be greater than that of the first injection hole 31. The second injection holes 122 are disposed coaxially with the first injection holes 31.

After the arrangement, the high-energy particles generated by the discharge of the first electrode 2 to the second electrode 3 are emitted to the first injection hole 31 of the second electrode 3 in a beam shape, and are sequentially sprayed out of the air purification device 100 through the first injection hole 31 of the second electrode 3 and the second injection hole 122 of the protective cover 12, so that the diffusion range of the high-energy particles is increased, and the sterilization effect and the odor removal effect are improved.

In an exemplary embodiment, the second electrode 3 is configured as a flat plate in the shape of a straight bar, with one plate surface of the second electrode 3 facing the first electrode 2. The first injection holes 31 are provided in plurality, and the plurality of first injection holes 31 are sequentially arranged along the extending direction of the second electrode 3.

The shield 12 is provided with a plurality of second spray holes 122. The number of the second injection holes 122 is the same as that of the first injection holes 31. The second spray holes 122 are arranged in one-to-one correspondence with the first spray holes 31, and the second spray holes 122 are coaxial with the corresponding first spray holes 31. The first injection hole 31 may have a shape of circular, square, hexagonal, etc., which is centrosymmetric.

The extension direction of the conductive base 22 of the first electrode 2 is the same as the extension direction of the second electrode 3. The number of conductive tip portions 21 of the first electrode 2 is the same as the number of first injection holes 31. The tip of each conductive tip portion 21 is located on the central axis of the first injection hole 31 corresponding thereto.

The plurality of conductive tips 21 are simultaneously discharged, more plasma is generated, and the sterilization effect and the odor removal effect are better.

In another exemplary embodiment, the second electrode 3 is provided with a first injection hole extending in a first direction, which may be an elongated hole. The first electrode includes a conductive base connected to the base body and a plurality of conductive tip portions extending from the conductive base toward the second electrode 3 and arranged in a first direction, the conductive tip portions being provided with tips facing the first injection holes, at least two of the tips facing the same first injection hole. The shield is provided with a second injection hole leading to the first injection hole, the second injection hole may extend in the first direction, the second injection hole may be equal in length to the first injection hole in the first direction, and the second injection hole may be smaller than or equal in width to the first injection hole in a width direction perpendicular to the first direction.

In an exemplary embodiment, the third electrode 4 is provided in plurality. The third electrodes 4 may be provided in two, and the two third electrodes 4 are provided at opposite ends of the base body 111, respectively. The shield 12 is located between the two third electrodes 4.

The third electrodes 4 are arranged outside the protective cover 12, more negative ions are generated by the third electrodes 4, and the negative ions have more remarkable effects on dust fall and sterilization of air.

In one illustrative embodiment, the air purification apparatus 100 further includes a high voltage power supply assembly. The high voltage power supply assembly includes a high voltage package and a plurality of electrical wires. The high voltage package includes a transformer, a rectifier electrically connected to the transformer, and an output port electrically connected to the rectifier. The transformer converts the low-voltage alternating current into high-voltage alternating current and outputs the high-voltage alternating current to the rectifier, and the rectifier converts the high-voltage alternating current into high-voltage direct current. The output port includes a low voltage output terminal and a high voltage output terminal. The high-voltage direct current is output outwards through the low-voltage output terminal and the high-voltage output terminal. The low voltage output terminal is electrically connected to the second electrode 3 through an electric wire. The high voltage output terminal is electrically connected to the first electrode 2 and the third electrode 4 through wires. Only one high voltage output terminal may be provided, which outputs a negative high voltage having the same voltage to the first electrode 2 and the third electrode 4. The two high-voltage output terminals can be arranged, one high-voltage output terminal is connected to the first electrode 2 through one electric wire, the other high-voltage output terminal is connected to the third electrode through the other electric wire, and the two high-voltage output terminals can output negative high voltages with different voltages, so that the voltages of the negative high voltages loaded on the first electrode 2 and the third electrode 4 are different.

The present embodiment also proposes an air treatment apparatus capable of intake air and exhaust air, which is not limited in the treatment function of air, and for example, at least one of the treatment functions of temperature adjustment, humidification, purification, circulation, and the like may be performed on air. The air treatment device includes, but is not limited to, an air conditioner, and the air treatment device may also be a purifier, a humidifier, a fan, etc., and after the specific type of the air treatment device is determined, those skilled in the art can know the configuration of the air treatment device to implement the air treatment function, which is not described herein.

The air treatment apparatus includes a cabinet, a blower, and the above-described air cleaning device 100. The casing is provided with an air inlet, an air outlet and an air duct. Two ends of the air duct are respectively connected with the air inlet and the air outlet. The fan is arranged in the air duct. The fan can be a cross-flow fan or a centrifugal fan. After the fan is started, air in the air duct can be driven to move from the air inlet to the air outlet, so that the air inlet sucks air in the surrounding environment into the air duct, and the air flows through the air duct and is discharged from the air outlet to the surrounding environment. The air cleaning device 100 is disposed within an intake or duct.

The present application has been described in terms of several embodiments, but the description is illustrative and not restrictive, and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the described embodiments. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or in place of any other feature or element of any other embodiment unless specifically limited.

The present utility model includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The disclosed embodiments, features and elements of the present utility model may also be combined with any conventional features or elements to form a unique inventive arrangement as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive arrangements to form another unique inventive arrangement as defined in the claims. It is therefore to be understood that any of the features shown and/or discussed in the present utility model may be implemented alone or in any suitable combination. Accordingly, the embodiments are not to be restricted except in light of the attached claims and their equivalents. Further, various modifications and changes may be made within the scope of the appended claims.

Furthermore, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other sequences of steps are possible as will be appreciated by those of ordinary skill in the art. Accordingly, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Furthermore, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.

Claims

1. An air cleaning apparatus, comprising:

a housing;

A first electrode connected to the housing for loading a negative voltage;

2. The air purification apparatus of claim 1, wherein the housing comprises a base, the base comprising:

A pillar extending from the base body and connected to the second electrode;

3. The air cleaning device according to claim 2, wherein a width of the first through hole in a direction from the pillar to the first electrode is 1mm or more.

4. The air cleaning apparatus according to claim 2, wherein two of the pillars are provided, and the first electrode is provided in a region between the two pillars;

5. The air cleaning device of claim 2, wherein a surface of the second electrode facing the first electrode is exposed; or an insulating layer is arranged on the second electrode, and the insulating layer coats the surface of the second electrode facing the first electrode.

6. The air cleaning apparatus according to any one of claims 2 to 5, wherein the housing further comprises a shield provided with a vent hole, the shield being covered on the base body;

7. The air cleaning device of claim 6, wherein a space is provided between the second electrode and the shield.

8. The air purification apparatus of claim 6, wherein the third electrode is disposed outside the protective cover.

9. The air cleaning apparatus according to claim 6, wherein the second electrode is provided with a first injection hole, and the shield is provided with a second injection hole coaxial with the first injection hole;

10. The air cleaning apparatus according to claim 9, wherein the second electrode is configured as a flat plate in a straight bar shape, and one plate surface of the second electrode faces the first electrode.

11. The air cleaning apparatus according to claim 9, wherein the conductive tip portion, the first injection hole, and the second injection hole are each provided with a plurality of;

12. The air cleaning apparatus according to claim 6, wherein the second electrode is provided with a first injection hole extending in a first direction;

13. An air treatment apparatus comprising an air cleaning device according to any one of claims 1 to 12.